Software Alternatives, Accelerators & Startups

KosmoTime VS ForthWrite

Compare KosmoTime VS ForthWrite and see what are their differences

KosmoTime logo KosmoTime

The to do list with super powers

ForthWrite logo ForthWrite

Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.
Visit Website
  • KosmoTime Landing page
    Landing page //
    2021-08-25
  • ForthWrite Landing Page
    Landing Page //
    2026-06-19
  • ForthWrite Dashboard
    Dashboard //
    2026-06-19
  • ForthWrite In Gmail
    In Gmail //
    2026-06-19
  • ForthWrite Pricing
    Pricing //
    2026-06-19

ForthWrite is an AI email writing assistant for Gmail and Outlook that learns your writing style from your real sent mail. The more you use it, the more it sounds like you. Get smart drafts in seconds, auto-draft replies before you open your inbox, and maintain your personal voice at scale. Free to start, no credit card required. Works inside Gmail and Outlook on the web.

How it works

ForthWrite captures your tone, sentence rhythm, and sign-offs from your actual sent emails, then uses that profile to generate drafts that match how you write, not a generic AI voice. Every draft you edit or send improves the model over time.

Key features

  • Auto-draft: replies waiting in Gmail before you open your inbox
  • Voice matching from your real sent mail, not templates
  • Recipient-aware drafts that adapt to who you are emailing
  • Prompt Lab for version-controlling and A/B testing your persona prompt
  • BYOK support: bring your own API key for Claude, OpenAI, Grok, Mistral, and more
  • Works in Gmail and Outlook on the web, plus a standalone browser widget
  • Training data export and full data portability

Who uses it

Professionals who send high volumes of relationship-critical email: lawyers, financial advisors, recruiters, account executives, founders, and anyone who wants their inbox handled without sounding like a chatbot wrote it.

Pricing

Free tier includes 10 drafts per week with no credit card required. Paid plans start at $12/month and include unlimited drafts, custom persona prompts, and auto-draft.

KosmoTime

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

ForthWrite

$ Details
freemium $12.0 / Monthly (Standard plan)
Platforms
Web
Release Date
2026 June
Startup details
Country
United States
State
California
City
San Diego
Founder(s)
Curtis Boortz
Employees
1 - 9

KosmoTime features and specs

  • Task Integration
    KosmoTime integrates with popular tools like Trello, Asana, and Slack, making it easy to consolidate tasks from multiple platforms into one organized system.
  • Calendar Syncing
    The app syncs with Google Calendar, helping users track their time and manage schedules efficiently.
  • Focus Time
    KosmoTime includes a feature that blocks distractions and allocates specific time slots for focused work, improving productivity.
  • Automated Task Blocking
    It helps in automatically blocking time for tasks on the calendar, eliminating the need for manual scheduling.
  • Recurring Tasks
    Allows for the easy set up of recurring tasks, which can be a huge time-saver for users with repetitive work.

Possible disadvantages of KosmoTime

  • Limited Platform Availability
    KosmoTime is primarily web-based and doesnโ€™t have native applications for all operating systems, which might limit its usability for some people.
  • Learning Curve
    New users might find the interface and all features overwhelming initially, requiring a bit of time to get accustomed to.
  • Feature Overlap
    Some features may overlap with existing tools that users are already using for project management, causing redundancy.
  • Subscription Cost
    Advanced features require a subscription, adding to the monthly or annual expenses for users.
  • Dependent on Integrations
    The utility of KosmoTime heavily relies on its integrations, and any issues or changes in integrated tools could affect its functionality.

ForthWrite features and specs

  • Voice Matching
    Learns from your real sent mail, not templates
  • Auto-draft replies
    Replies waiting in Gmail before you open your inbox
  • Batch-drafting
    Draft replies for your entire inbox with one click
  • Works in browser
    Gmail, Outlook, and web browsers
  • BYOK support
    Claude, OpenAI, Grok, Mistral, and more
  • Prompt Lab
    Version control and A/B test your persona prompt
  • Free tier
    10 drafts per week, no credit card required

Analysis of KosmoTime

Overall verdict

  • KosmoTime can be a good tool for those who need a structured approach to productivity and time management. However, its usefulness may vary depending on individual needs and workflow preferences. Some users may find it an indispensable part of their productivity ecosystem, while others might prefer simpler solutions or tools with different focuses.

Why this product is good

  • KosmoTime is a productivity tool designed to help individuals and teams manage their tasks more effectively. It integrates task management with your calendar, offering features like time blocking, focus sessions, and automated scheduling. These features are aimed at reducing distractions and improving focus, which can be beneficial for people looking to increase their productivity.

Recommended for

  • Individuals who benefit from visual task scheduling.
  • Professionals needing to integrate task management with calendar systems.
  • Users looking for a tool to minimize distractions and time waste.
  • Teams that require coordinated task management and scheduling.

KosmoTime videos

๐Ÿ•” KosmoTime - Smart Calendar for Time Blocking & Focused Work

More videos:

  • Review - KosmoTime I Smart Calendar for Time Blocking & Focused Work

ForthWrite videos

No ForthWrite videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to KosmoTime and ForthWrite)
Productivity
100 100%
0% 0
Writing Tools
0 0%
100% 100
Task Management
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing KosmoTime and ForthWrite.

Which are the primary technologies used for building your product?

ForthWrite's answer:

Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API

What makes your product unique?

ForthWrite's answer:

ForthWrite learns your writing style from your actual sent mail, not a generic prompt. Every draft sounds like you wrote it because it was trained on how you actually write. It also auto-drafts replies before you open your inbox, so your email is partially handled before your day starts.

Why should a person choose your product over its competitors?

ForthWrite's answer:

Most AI email tools give you a blank box and a "write for me" button. ForthWrite builds a voice profile from your sent history and gets more accurate with every draft you edit or send. Unlike ChatGPT or Gemini, it works natively inside Gmail and Outlook with no copy-paste. Unlike Lavender, it writes the draft, not just scores it.

How would you describe the primary audience of your product?

ForthWrite's answer:

Professionals who send high volumes of relationship-critical email and cannot afford to sound generic: lawyers, financial advisors, recruiters, account executives, consultants, and founders managing their own inbox.

What's the story behind your product?

ForthWrite's answer:

Built out of frustration with AI writing tools that produce text that sounds nothing like the person sending it, and as a way to handle large amounts of daily email. The core insight was that your sent mail is the best training data you already have, and no tool was using it.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare KosmoTime and ForthWrite

KosmoTime Reviews

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ForthWrite Reviews

  1. curtisboortz
    ยท Founder at ForthWrite ยท
    I built ForthWrite to fix generic AI email, and I still use it every day

    I built ForthWrite because I kept sending emails that sounded like they came from the same generic AI as everyone else. After launching it, I still use it for my own inbox every day, which is about the most honest endorsement I can give.

    The Chrome extension lives inside Gmail and Outlook on the web. Open a thread, hit Alt+Shift+D, and a draft comes back in your voice, not a template. The free tier is real: 10 drafts per week, no API key, no credit card. Voice matching is included on free, because that is the point.

    What keeps it useful compared to Gemini or a chat tab: it learns from what you actually send. Every edit you make before hitting send becomes a signal. Over time the drafts drift closer to how you really write, and the dashboard shows the improvement curve so you can see it happening.

    The web compose surface lets you draft from forthwrite.ai without installing anything, useful for people who want to try before committing to the extension.

    Standard adds recipient-aware and intent-aware drafting plus AI coaching. Pro adds auto-draft (replies waiting when you open Gmail), batch replies, and Prompt Lab for version-controlling your prompts. Teams adds a shared persona and seat-level analytics.

    ForthWrite is not for everyone. If you just need quick replies and tone does not matter, Gemini is free and already in your inbox. ForthWrite is for people where tone does matter: client communication, relationship-driven threads, external correspondence where sounding off costs something real.

    Disclosure: I am the founder and use it daily. Happy to answer questions in the comments.

    ๐Ÿ Competitors: Jace.ai, Fyxer, Mailmeteor
    ๐Ÿ‘ Pros:    Drafts land inside gmail and outlook; no copy-pasting from a chat window|Voice matching is on the free tier, not paywalled behind paid plans|No api key, no credit card to start; free tier runs on a server-side proxy|Learns from every edit you make before sending; drafts improve over time|Full keyboard flow: alt+shift+d to draft in any thread, no mouse required|Byok on paid plans, 9 providers supported, keys encrypted at rest|Web compose at forthwrite.ai works without installing the extension at all
    ๐Ÿ‘Ž Cons:    10 free drafts/week is enough to evaluate, not enough for a heavy inbox|Auto-draft, batch replies, and prompt lab all require the pro tier|Early-stage product; fewer third-party integrations than mature inbox tools|No mobile app: the extension and add-in are desktop-only (chrome on web, or the outlook desktop add-in)

What are some alternatives?

When comparing KosmoTime and ForthWrite, you can also consider the following products

Taskful - Deadlines, meet your match.

Superhuman - Superhuman is an email management tool.

Calendarist - Time blocking companion for Google Calendar

Gemini - Gemini, formerly known as Bard, is a generative artificial intelligence chatbot developed by Google. Based on the large language model (LLM) of the same name, it was launched in 2023 in response to the rise of OpenAI's ChatGPT.

Centered - Centered helps you get into a Flow State faster and stay there longer so you can do your best work.

Lavender - Realtime coaching for sales emails.